Skip to content

Science Quote by Jack London

“I call you metaphysicians because you reason metaphysically," Ernest went on. "Your method of reasoning is the opposite to that of science. There is no validity to your conclusions. You can prove everything and nothing, and no two of you can agree upon anything. Each of you goes into his own…” quote by Jack London
Download Open image
““I call you metaphysicians because you reason metaphysically," Ernest went on. "Your method of reasoning is the opposite to that of science. There is no validity to your conclusions. You can prove everything and nothing, and no two of you can agree upon anything. Each of you goes into his own consciousness to explain himself and the universe. As well may you lift yourselves by your own bootstraps as to explain consciousness by consciousness.””

Jack London

About This Quote

Source Speech: Unknown, possibly a lecture or debate, date unknown

The speaker criticizes metaphysical reasoning as self‑referential and unscientific, arguing it lacks objective validity and consensus.

In simple terms: Metaphysics is seen as circular and unprovable.

Key Takeaway

Beware circular reasoning and seek empirical evidence.

Themes

philosophy science logic epistemology

Mood

skeptical critical inquisitive

Type

analytical philosophical

When to use this quote

  • academic debate
  • philosophical discussion
  • teaching
  • critical thinking
  • public lecture

Key Concepts

metaphysics consciousness bootstrapping validation

Questions to Reflect On

  • How do you distinguish useful speculation from empty rhetoric?
  • Can self‑reference ever lead to genuine insight?
A Different Perspective

Such reasoning can still inspire creative thought despite lack of proof.

2.4 out of 5 (3 ratings)

More by Jack London

Explore all 425 Jack London quotes

More Science quotes

Browse all 27,481 Science quotes